Artas is located some 20 km east by north-east of Vienne and some 8 km south of Villefontaine. Access to the commune is by the D53 road from Charantonnay in the west passing through the heart of the commune and the village and continuing to Saint-Agnin-sur-Bion in the east. The D126 road comes from Roche in the north through the heart of the commune and crossing the D53 in the village before continuing to Saint-Jean-de-Bournay in the south. Apart from the village there are also the hamlets of Le Barroz, Le Revolet, Cinquin, Radoire, Tarnezieux, and La Petite-Foret. The commune is mainly farmland with scattered forests throughout.
The Ruisseau de Charavoux rises in the west of the commune and flows west to join the Ambalon near Chasse-sur-Rhône.
In 2010 the commune had 1,620 inhabitants. The evolution of the number of inhabitants is known from the population censuses conducted in the commune since 1793. From the 21st century, a census of communes with fewer than 10,000 inhabitants is held every five years, unlike larger towns that have a sample survey every year.[Note 1]
^At the beginning of the 21st century, the methods of identification have been modified by Law No. 2002-276 of 27 February 2002, the so-called "law of local democracy" and in particular Title V "census operations" allows, after a transitional period running from 2004 to 2008, the annual publication of the legal population of the different French administrative districts. For communes with a population greater than 10,000 inhabitants, a sample survey is conducted annually, the entire territory of these communes is taken into account at the end of the period of five years. The first "legal population" after 1999 under this new law came into force in 1 January 2009 and was based on the census of 2006.